Research on End Effect of Linear Induction Machine for High-Speed Industrial Transportation

Due to the difference of movement and boundary conditions between long-primary double-sided linear induction motors (DSLIMs) and short-primary DSLIMs, the longitudinal end effect is different. This paper analyzes the dynamic longitudinal end effect of long-primary LIMs according to the basic princip...

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Bibliographic Details
Published in:IEEE transactions on plasma science 2011-01, Vol.39 (1), p.116-120
Main Authors: Lu, Junyong, Ma, Weiming
Format: Article
Language:English
Subjects:
Analytical models
Circuits
Double-sided linear induction motor (DSLIM)
Dynamic tests
Dynamics
Electromagnetism
end effect
equivalent circuit model
Equivalent circuits
High speed
Induction motors
Integrated circuit modeling
LIMS
long primary
Magnetic circuits
Magnetic fields
Mathematical models
Plasma
Poles
Slip
Solid modeling
Three dimensional imaging
Transportation
Traveling waves
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Summary:Due to the difference of movement and boundary conditions between long-primary double-sided linear induction motors (DSLIMs) and short-primary DSLIMs, the longitudinal end effect is different. This paper analyzes the dynamic longitudinal end effect of long-primary LIMs according to the basic principle and electromagnetic field theory and explains the difference of magnetic field traveling wave and its influence between these two kinds of DSLIM. The equivalent circuit model and correction factors considering the end effect are described through theory analysis. To verify the validity of the model, 3-D field analysis by Ansoft 3-D is implemented, and the field distribution is presented. The analysis results have a good agreement with the results where the end effect is considered than that where the end effect is not considered. A useful conclusion is that, with proper selection of the secondary poles and proper attention to the slip that the machine is operating at, the end effect will have a much smaller influence than that in the short-primary DSLIM. It provides a good way for this kind of machine design and industrial application in the future.
ISSN:0093-3813
1939-9375
DOI:10.1109/TPS.2010.2085089